The weak point in Apple's Mac OS X operating system is apparently worse than originally thought. In addition to attacks via the Safari web browser, Apple Mail also executes scripts without asking in certain circumstances. It suffices to disguise a script with the ending "jpg" and assign the Terminal application for opening it. If this script is then sent in the AppleDouble format as an attachment, the information is passed along so that the recipient's system also opens it with the Terminal. Apple Mail displays the attachment with a JPG file symbol, but when users click on it, the script executes within Terminal without further prompting. Update: Heise is right.